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milliequivelent values, end spring flow measurement reports ere presented in Appendix 7.5. <br />• Detailed information regarding the Toast spring monitoring network and baseline monitoring <br />efforts can be found on Table 75-2 in Tab 15, Hydrologic Monitoring Program. <br />Exhibit 7-7 (Hydrologic Monitoring Sites) depicts the locations of all spring monitoring <br />sites. The physical characteristics of the ten Yoast spring monitoring sites very. <br />Springs YSPGS, TSPG7, and YSPGB ere monitored et smell stock ponds constructed below each <br />spring to collect and temporarily store the diffuse seepage of ground water from each <br />spring source. Discharge from Spring YSPG2 is monitored a short distance downgredient at <br />surface water Site YS 53. YSPG1 has been inundated by the construction of Pond Y7 and no <br />baseline monitoring was conducted at this site (see Exhibit 7-1). Springs TSPG3 end YSPG6 <br />both have been developed end have discharge points from which samples and flow <br />measurements ere collected. Both TSPG4 and YSPGS have no pond or spring development <br />structures installed, end discharges from both ere diffuse when occurring. Spring YSPG10 <br />is actually an artesian well which is monitored when flowing, usually in the spring. <br />Smring Dischara e. Appendix 7-5 includes tabular listings of discharge measurements end <br />• pertinent field remarks documented while monitoring each spring during the baseline <br />period. Field remarks included on each tabular report provide further insight into the <br />nature of spring flow at each site monitored. <br />Springs YSPGS, YSPG4, and YSPGS are located on the Sage Creek side of the Yoast mining <br />area (see Exhibit 7-1). Instantaneous flow measurements at Spring YSPGS varied from .3 <br />gallons per minute (gpm) up to 5 gpm. This spring generally flows during the spring and <br />early summer, end dissipates before the onset of fell. In 1993, however, slightly higher <br />flow was observed in August (approximately 1.3 gpm) then June (.85 gpm). Flow <br />measurements et YSPG4 ranged from .1G gpm to more then 75 gpm. Monitoring at YSPG4 <br />suggests perennial flow, although during the winter, ice end snow may prevent flow from <br />occurring. Similar to YSPGS, flow at YSPG4 is highest during the spring following <br />snowmelt, lessening ac the seasons progress toward winter. Spring YSPGS is comprised of a <br />small stock pond, end since monitoring began in June 1991, no measurable flow into or out <br />of the pond was noted. <br />Springs TSPGb, TSPC7, YSPGB, YSPGS, and TSPG10 ell are located within the Annend Drew <br />• basin (see Exhibit 7.1). Of these, TSPG6 exhibits the greatest persistence, ea some flow <br />has been measured et this spring during every monitoring visit, ranging from .38 gpm up to <br />93 gpm. Spring flow et TSPGb (s highest during [he spring following snowmelt, gradually <br />75 <br />